155601245 has 8 divisors (see below), whose sum is σ = 192744960. Its totient is φ = 120465360.

The previous prime is 155601239. The next prime is 155601247. The reversal of 155601245 is 542106551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155601245 - 2⁶ = 155601181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155601247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501785 + ... + 502094.

It is an arithmetic number, because the mean of its divisors is an integer number (24093120).

Almost surely, 2^155601245 is an apocalyptic number.

It is an amenable number.

155601245 is a deficient number, since it is larger than the sum of its proper divisors (37143715).

155601245 is a wasteful number, since it uses less digits than its factorization.

155601245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003915.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 155601245 is about 12474.0228074186. The cubic root of 155601245 is about 537.8621982765.

Adding to 155601245 its reverse (542106551), we get a palindrome (697707796).

It can be divided in two parts, 15560 and 1245, that multiplied together give a triangular number (19372200 = T₆₂₂₄).

The spelling of 155601245 in words is "one hundred fifty-five million, six hundred one thousand, two hundred forty-five".